There is a solution.
If we set
ListView.Capture=true;
we can keep the mouse pointer without hiding. While setting Capture property of ListView as true, It will capture the mouse events and mouse pointer wont be disappeared while typing in TextBox.
Another Problem.
I am using RichTextBox instead of TextBox. The above mentioned technique will not work with RichTextBox. That means mouse cursor will disappear while typing in RichTextBox even though ListView.Capture=true.
When using RichTExtBox and ListView.Capture=true, ListView captures mouse move and mouse click events but mouse pointer is disappearing. Any one know why it is happening like this?